private static bool GetWindows8Or10Message(string userAgent, ref string userMessage) { bool hasWindows10 = Helpers.HasWindows10(userAgent); if (Helpers.HasWindows8(userAgent) || hasWindows10) { var version = hasWindows10 ? "4.6" : "4.5"; userMessage += string.Format(Constants.InferredText, version); return true; } return false; }